Arctic Sea Ice Underestimated for Weeks Due to Faulty Sensor

A glitch in satellite sensors caused scientists to underestimate the extent of Arctic sea ice by 500,000 square kilometers (193,000 square miles), a California- size area, the U.S. National Snow and Ice Data Center said. The error, due to a problem called “sensor drift,” began in early January and caused a slowly growing underestimation of sea ice extent until mid-February.

[Again and again. When there's a monetary interest involved, all kinds of 'mistakes' can {and do - and do and do} happen - most going unreported.]

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